Mechanical release of spring brake (caging) – SAF-HOLLAND XL-AM20006BM Brake and Service Chamber User Manual
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XL-AM20006BM-en-US · 2014-04-22 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND, HOLLAND, SAF,
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4. Insert the release tool bolt through the release tool
access hole in the center of the spring housing and
into the pressure plate that is inside the spring
housing (Figure 16).
5. Once fully inserted, turn the release tool bolt
1/4 turn clockwise.
6. Pull the release tool bolt to ensure the bolt's cross-pin
ears are properly seated on the pressure plate.
7. Assemble the release tool washers and nut on the release
tool bolt to finger-tight.
8. Release the air pressure. The brake is now caged.
4.2 Optional Method
Failure to properly torque the release
tool nut could cause pressure plate,
washer and/or spring housing damaged
resulting in sudden release of the main
spring which, if not avoided could result
in death or serious injury.
IMPORTANT: These instructions apply only when the
spring brake is NOT pressurized.
1. Using a flashlight, look through the access hole for the
pressure plate (spring plate). It should be located 2.5-3"
(64-76 mm) from the access hole.
2. Insert the release tool bolt through the access hole, all
the way into the pressure plate that is inside the spring
housing (Figure 16).
3. Turn the release tool bolt 1/4 turn clockwise. Pull the
release bolt and make sure the bolt's cross pin ears sit
properly on the pressure plate (Figure 17).
4. Assemble the release tool washers and nut on the
release tool bolt to finger tight.
5. To cage the main spring mechanically, tighten the
release tool nut with a hand wrench, DO NOT use and
impact wrench. Ensure the service push rod is retracting
while tightening.
6. When the service push rod stops moving and/or the
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extends beyond the nut more than 3.25" (82.5 mm),
stop torquing the release tool bolt assembly. The brake
is considered caged.
DO NOT over torque the release tool bolt
assembly. Failure to avoid over torquing
can cause pressure plate damage.
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Figure 16
RELEASE BOLT 1/4 TURN CLOCKWISE
RELEASE TOOL NUT
INSERT RELEASE BOLT
RELEASE TOOL WASHER
Figure 17
RELEASE BOLT 1/4 TURN CLOCKWISE
RELEASE TOOL NUT AND WASHER
Mechanical Release of Spring Brake (Caging)